Fire-escape.



No. 65l,653. Patented June I2, 1900.. 0. F. DAVIS.

FIRE ESCAPE.

(Application filed Oct. 13, 1899.) (No Model.)

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UNITED STATES PATENT OFFICE.

OSCAR F. DAVIS, OF QUINCY, ILLINOIS.

FIRE-ESCAPE.

SPECIFICATION formingpart of Letters Patent No. 651,653, dated June 12,1900. Application filed October 13, 1899. Serial No. 733,539. (No model.)

To all whom, it may concern:

Be it known that I, OSCAR F. DAVIS, of the city of Quincy, Adams county, State of Illinois, have invented certain new and useful Improvements in Fire-Escapes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to fire-escapes; and it consists of the novel construction, combination, and arrangement of parts hereinafter shown, described, and claimed.

The object of this invention is to overcome the confusion which might arise in the manipulation of the double brake of myimproved fire-escape for which Letters Patent of the United States were allowed me J une 10, 1884, No. 299,967, and to provide means in said escape whereby greater friction may be created.

Figure 1 shows my improved fire-escape with the cover removed and the brake open. Fig. 2 is a view of the escape, showing a broken portion of the cover attached and the brake closed. Fig. 3 shows the device in operation.

In the construction of thisdevice I provide the friction-box 1, having the friction-studs 2, 3, and 4, around which the rope 5 coils in the manner shown in Figs. 1 and 2. A single brake 6 is attached to the double spring 7 and has a groove 8 on its inner side, into which the rope 5 fits. Said brake 6 is suitably rounded at its ends, so that it will not cut the rope.

When the device is in operation, the brake 6 is pressed inwardly, as shown in Fig. 2. This pushes the rope 5 against the center stud 3 and against the end stud 4 and presses closely together the oppositely-moving coils of rope along the line 9. Also the weight of the person being lowered draws the oppositely-moving coils closely together along the line 10 10. By these several means of creating friction the person operating the device can lower himself at any degree of rapidity desired and the confusion of operating a double brake is obviated.

I claim In a fire-escape, the combination of the friction-box 1 having friction-studs 2, 3 and 4 and a brake 6 operating through an aperture in the edge of said friction-box, and in alinement with the friction-stud 3, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

OSCAR F. DAVIS.

Witnesses:

JOHN C. HIGDON, JOHN D. RIPPEY. 

